Synthetic Antigen-presenting Cells
Synthetic Antigen-presenting Cells - Related Videos
09:30
Synthetic Antigen Controls for Immunohistochemistry
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2021
This work documents a simple method to create synthetic antigen controls for immunohistochemistry. The technique is adaptable to a variety of antigens in a wide range of concentrations. The samples provide a reference with which to assess intra- and inter-assay performance and reproducibility.
06:57
Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
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Cited by 9 •
2016
In this antigen-driven colitis model, OT-II CD4+ T cells expressing a red fluorescent protein were adoptively transferred into RAG-/- mice that express a green fluorescent protein in mononuclear phagocytes (MPs). The hosts were challenged with Escherichia coli (E.coli) expressing the ovalbumin protein (OVA) fused to a cyan fluorescent protein (CFP).
07:28
Synthetic Biology
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2023
This video presents synthetic biology and its role in bioengineering. Synthetic biology refers to the methods used to genetically modify organisms in order to make them capable of producing large quantities of a product. This product could be a protein that the cell already makes or a new protein that has been encoded in a newly-inserted DNA sequence. Here, we discuss how an organism's genetic material is modified using transformation or transfection. Then, the process is shown in the...
02:41
B Cell Activation on an Antigen-Coated Coverslip
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2025
This video demonstrates B cell activation in vitro. The process involves antigen interaction with B cell receptors, leading to cytoskeleton remodeling, immune synapse formation, lysosome movement, antigen internalization, processing, and subsequent presentation on MHC molecules for B cell activation.
16:11
Protocols for Implementing an Escherichia coli Based TX-TL Cell-Free Expression System for Synthetic Biology
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Cited by 380 •
2013
This five-day protocol outlines all steps, equipment, and supplemental software necessary for creating and running an efficient endogenous Escherichia coli based TX-TL cell-free expression system from scratch. With reagents, the protocol takes 8 hours or less to setup a reaction, collect, and process data.
FAQs
Peptide–MHC complexes engage the T-cell receptor and provide antigen-specific recognition, while co-stimulatory ligands help regulate whether that recognition promotes activation and proliferation. Adhesion molecules can support cell–platform interactions, and cytokines can influence differentiation. Combining these signals allows investigators to examine how individual inputs or defined signal combinations affect T-cell behavior.
A defined composition reduces variation in the signals presented to T cells. Researchers can control which peptide–MHC molecules, co-stimulatory ligands, adhesion molecules, or cytokines are included, then relate the resulting activation, proliferation, or differentiation to those selected components. This control improves reproducibility and helps isolate the signals that govern an immune response.
Natural antigen-presenting cells deliver multiple biological signals whose relative contributions can be difficult to separate. Synthetic antigen-presenting cells simplify that environment by presenting selected signals on a controllable scaffold. They therefore support mechanistic experiments that test defined combinations, although their value in this context comes from modeling key functions rather than reproducing every feature of a natural cell.
The displayed antigen, the presence or absence of co-stimulatory ligands, adhesion molecules, and cytokines, and the choice of scaffold can all affect the response. Because these elements can be combined in controlled ways, experiments can compare how different signal sets influence T-cell activation, proliferation, or differentiation and identify which inputs are associated with a particular outcome.
A general workflow is to select the antigenic peptide and desired regulatory signals, present them on a bead, liposome, nanoparticle, or other scaffold, and then expose T cells to the engineered platform. Investigators measure outcomes such as activation, proliferation, or differentiation. The defined setup enables comparisons between signal combinations while limiting uncontrolled variation.
They are useful when researchers need to model pathogen-specific T-cell responses or isolate signals involved in host defense. By displaying selected antigenic information with controlled regulatory cues, the platforms can support studies of immune activation and help evaluate how responses might be shaped for vaccine development. Their reproducibility is especially valuable when comparing experimental conditions.
Synthetic antigen-presenting cells can provide antigen-specific recognition together with selected signals that promote T-cell activation and proliferation. This makes them useful for expanding T cells directed against a chosen antigen before downstream research or therapeutic development. Their controllable composition also supports efforts to produce more targeted immune interventions and to examine how differentiation is influenced during expansion.